T. Spychaj, R. Pilawka, S. Spychaj
Jan 17, 2004
Citations
0
Influential Citations
9
Citations
Journal
Industrial & Engineering Chemistry Research
Abstract
Tertiary alkanolamines, i.e., N-methyldiethanolamine, N-ethyldiethanolamine, N-isopropyldiethanolamine, N-(n-butyl)diethanolamine, N-cyclohexyldiethanolamine, N-isopropanoldiethanolamine, triethanolamine, triisopropanolamine, N,N‘-bis(2-hydroxyethyl)piperazine, N,N,N‘,N‘-tetra(2-hydroxyethyl)ethylenediamine, and N,N,N‘,N‘-tetra(2-hydroxyethyl)propylene 1,3-diamine were applied as poly(ethylene terephthalate) (PET) solvolytic agents. Solvolysis (i.e., aminoglycolysis) of PET was performed at 190−220 °C for 90−240 min. PET aminoglycolysates were characterized via hydroxyl number and viscosity measurements, whereas some products were characterized by SEC, HPLC, and FTIR and 1H NMR spectroscopies. Selected products were tested as epoxy resin hardeners for elevated-temperature curing. Rheometric properties, as well as heats of the cross-linking reactions in the systems containing liquid bisphenol A based epoxy resin and PET aminoglycolysates (with a broad ratio of the latter) were investigated and compared. Th...